Specna Arms X-Shield FAST BJ Helmet sig sauer The Hopup Chamber M4A unit

The Hopup Chamber M4A unit is wisely equipped with an interchangeable Inlet Adaptor OD11mm to ensure the hopup unit is inserted exactly in the center of the 11mm inner bore AEG Gearbox/HPA Engine nozzle outlet without wobbling

or as a sidearm for individuals who want a larger volume of fire from their secondary

3” CQB Length Barrel

Fits all M4 airsoft guns

GR16 style

Specna Arms X-Shield FAST BJ Helmet sig sauer The Hopup Chamber M4A unitThe FAST helmets set a new quality standard in the field of head protection gear. Both the wearing comfort and the versatility of the helmet are the definite determinants of this line. The lining is based on foams whichs positions can be changed in order to fit the helmet perfectly to the shape of the head. The four point chin strap is equipped with an easy and fast adjustment system and, additionally, it is a closed system what means it does not have